Singularity evaluation in boundary integral equations of minimum order 3-D eddy currents

The application of a minimum order Boundary Element Method to 3-D eddy current problems is examined. A simple mathematical treatment of the singular integrals that arise is described and simple formulae to evaluate these integrals are presented. The computation of the magnetic fields in the space R³is discussed and convenient computational expressions are provided. Results for a conducting cube in a time harmonic source field are presented and are compared with Bath Cube test data.